Mechanical properties of pure tungsten rod
With a tensile strength of about 550 MPa, pure tungsten rod is one of the strongest metal materials. It has a high elastic modulus, which means it is able to resist bending and deflection. However, pure tungsten rod is brittle and easily cracks or breaks under pressure. In addition, pure tungsten rod is difficult to process due to its hardness and ductility.
Chemical properties of pure tungsten rod
Pure tungsten rod is highly resistant to chemical attack by most acids and bases. It is not affected by air or water at room temperature, making it an excellent choice for high temperature and high stress applications. However, it can be oxidized at high temperatures in the presence of oxygen to form a thin layer of tungsten oxide.
Thermal properties of pure tungsten rod
Pure tungsten rod has a low coefficient of thermal expansion, which means it expands or contracts only slightly with temperature changes. It has high thermal conductivity, making it an excellent thermal conductor. Pure tungsten rod also has a high melting point, which can maintain its strength and durability at high temperatures, making it ideal for high temperature applications.
Electrical properties of pure tungsten rod
Pure tungsten rod has a low resistivity, making it a good electrical conductor. It is commonly used in electrical and electronic applications, including heating elements, filaments, and electrical contacts. However, its low electron emissivity makes it unsuitable for use in electron tubes and vacuum devices.
Density and Weight of Pure Tungsten Rod
The density of pure tungsten rod is approximately 19.3 g/cm³, one of the highest densities of all metallic materials. This high density makes pure tungsten rod unusually heavy, weighing approximately 340 grams per cubic centimeter. This weight makes it difficult to handle, but it also provides additional strength, durability, and resistance to high temperatures and harsh environments.